I have picked up large lots in the past from Cherrystone and do not anymore because of the overly enthusiastic estimates. Usually the lots disappointed.
I now bid at Cherrystone for singles and sets that I have had a difficult time finding. That being said Cherrystone has a lot of specialized material that is scarce and even rare but is for advanced collectors and specialists and thus the bidder pool is smallish. They also have their auctions on weekdays.